| // Standard stream manipulators -*- C++ -*- |
| |
| // Copyright (C) 1997-2014 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // Under Section 7 of GPL version 3, you are granted additional |
| // permissions described in the GCC Runtime Library Exception, version |
| // 3.1, as published by the Free Software Foundation. |
| |
| // You should have received a copy of the GNU General Public License and |
| // a copy of the GCC Runtime Library Exception along with this program; |
| // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| // <http://www.gnu.org/licenses/>. |
| |
| /** @file include/iomanip |
| * This is a Standard C++ Library header. |
| */ |
| |
| // |
| // ISO C++ 14882: 27.6.3 Standard manipulators |
| // |
| |
| #ifndef _GLIBCXX_IOMANIP |
| #define _GLIBCXX_IOMANIP 1 |
| |
| #pragma GCC system_header |
| |
| #include <bits/c++config.h> |
| #include <iosfwd> |
| #include <bits/ios_base.h> |
| |
| #if __cplusplus >= 201103L |
| #include <locale> |
| #if __cplusplus > 201103L |
| #include <sstream> // used in quoted. |
| #endif |
| #endif |
| |
| namespace std _GLIBCXX_VISIBILITY(default) |
| { |
| _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| |
| // [27.6.3] standard manipulators |
| // Also see DR 183. |
| |
| struct _Resetiosflags { ios_base::fmtflags _M_mask; }; |
| |
| /** |
| * @brief Manipulator for @c setf. |
| * @param __mask A format flags mask. |
| * |
| * Sent to a stream object, this manipulator resets the specified flags, |
| * via @e stream.setf(0,__mask). |
| */ |
| inline _Resetiosflags |
| resetiosflags(ios_base::fmtflags __mask) |
| { return { __mask }; } |
| |
| template<typename _CharT, typename _Traits> |
| inline basic_istream<_CharT, _Traits>& |
| operator>>(basic_istream<_CharT, _Traits>& __is, _Resetiosflags __f) |
| { |
| __is.setf(ios_base::fmtflags(0), __f._M_mask); |
| return __is; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| inline basic_ostream<_CharT, _Traits>& |
| operator<<(basic_ostream<_CharT, _Traits>& __os, _Resetiosflags __f) |
| { |
| __os.setf(ios_base::fmtflags(0), __f._M_mask); |
| return __os; |
| } |
| |
| |
| struct _Setiosflags { ios_base::fmtflags _M_mask; }; |
| |
| /** |
| * @brief Manipulator for @c setf. |
| * @param __mask A format flags mask. |
| * |
| * Sent to a stream object, this manipulator sets the format flags |
| * to @a __mask. |
| */ |
| inline _Setiosflags |
| setiosflags(ios_base::fmtflags __mask) |
| { return { __mask }; } |
| |
| template<typename _CharT, typename _Traits> |
| inline basic_istream<_CharT, _Traits>& |
| operator>>(basic_istream<_CharT, _Traits>& __is, _Setiosflags __f) |
| { |
| __is.setf(__f._M_mask); |
| return __is; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| inline basic_ostream<_CharT, _Traits>& |
| operator<<(basic_ostream<_CharT, _Traits>& __os, _Setiosflags __f) |
| { |
| __os.setf(__f._M_mask); |
| return __os; |
| } |
| |
| |
| struct _Setbase { int _M_base; }; |
| |
| /** |
| * @brief Manipulator for @c setf. |
| * @param __base A numeric base. |
| * |
| * Sent to a stream object, this manipulator changes the |
| * @c ios_base::basefield flags to @c oct, @c dec, or @c hex when @a base |
| * is 8, 10, or 16, accordingly, and to 0 if @a __base is any other value. |
| */ |
| inline _Setbase |
| setbase(int __base) |
| { return { __base }; } |
| |
| template<typename _CharT, typename _Traits> |
| inline basic_istream<_CharT, _Traits>& |
| operator>>(basic_istream<_CharT, _Traits>& __is, _Setbase __f) |
| { |
| __is.setf(__f._M_base == 8 ? ios_base::oct : |
| __f._M_base == 10 ? ios_base::dec : |
| __f._M_base == 16 ? ios_base::hex : |
| ios_base::fmtflags(0), ios_base::basefield); |
| return __is; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| inline basic_ostream<_CharT, _Traits>& |
| operator<<(basic_ostream<_CharT, _Traits>& __os, _Setbase __f) |
| { |
| __os.setf(__f._M_base == 8 ? ios_base::oct : |
| __f._M_base == 10 ? ios_base::dec : |
| __f._M_base == 16 ? ios_base::hex : |
| ios_base::fmtflags(0), ios_base::basefield); |
| return __os; |
| } |
| |
| |
| template<typename _CharT> |
| struct _Setfill { _CharT _M_c; }; |
| |
| /** |
| * @brief Manipulator for @c fill. |
| * @param __c The new fill character. |
| * |
| * Sent to a stream object, this manipulator calls @c fill(__c) for that |
| * object. |
| */ |
| template<typename _CharT> |
| inline _Setfill<_CharT> |
| setfill(_CharT __c) |
| { return { __c }; } |
| |
| template<typename _CharT, typename _Traits> |
| inline basic_istream<_CharT, _Traits>& |
| operator>>(basic_istream<_CharT, _Traits>& __is, _Setfill<_CharT> __f) |
| { |
| __is.fill(__f._M_c); |
| return __is; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| inline basic_ostream<_CharT, _Traits>& |
| operator<<(basic_ostream<_CharT, _Traits>& __os, _Setfill<_CharT> __f) |
| { |
| __os.fill(__f._M_c); |
| return __os; |
| } |
| |
| |
| struct _Setprecision { int _M_n; }; |
| |
| /** |
| * @brief Manipulator for @c precision. |
| * @param __n The new precision. |
| * |
| * Sent to a stream object, this manipulator calls @c precision(__n) for |
| * that object. |
| */ |
| inline _Setprecision |
| setprecision(int __n) |
| { return { __n }; } |
| |
| template<typename _CharT, typename _Traits> |
| inline basic_istream<_CharT, _Traits>& |
| operator>>(basic_istream<_CharT, _Traits>& __is, _Setprecision __f) |
| { |
| __is.precision(__f._M_n); |
| return __is; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| inline basic_ostream<_CharT, _Traits>& |
| operator<<(basic_ostream<_CharT, _Traits>& __os, _Setprecision __f) |
| { |
| __os.precision(__f._M_n); |
| return __os; |
| } |
| |
| |
| struct _Setw { int _M_n; }; |
| |
| /** |
| * @brief Manipulator for @c width. |
| * @param __n The new width. |
| * |
| * Sent to a stream object, this manipulator calls @c width(__n) for |
| * that object. |
| */ |
| inline _Setw |
| setw(int __n) |
| { return { __n }; } |
| |
| template<typename _CharT, typename _Traits> |
| inline basic_istream<_CharT, _Traits>& |
| operator>>(basic_istream<_CharT, _Traits>& __is, _Setw __f) |
| { |
| __is.width(__f._M_n); |
| return __is; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| inline basic_ostream<_CharT, _Traits>& |
| operator<<(basic_ostream<_CharT, _Traits>& __os, _Setw __f) |
| { |
| __os.width(__f._M_n); |
| return __os; |
| } |
| |
| #if __cplusplus >= 201103L |
| |
| template<typename _MoneyT> |
| struct _Get_money { _MoneyT& _M_mon; bool _M_intl; }; |
| |
| /** |
| * @brief Extended manipulator for extracting money. |
| * @param __mon Either long double or a specialization of @c basic_string. |
| * @param __intl A bool indicating whether international format |
| * is to be used. |
| * |
| * Sent to a stream object, this manipulator extracts @a __mon. |
| */ |
| template<typename _MoneyT> |
| inline _Get_money<_MoneyT> |
| get_money(_MoneyT& __mon, bool __intl = false) |
| { return { __mon, __intl }; } |
| |
| template<typename _CharT, typename _Traits, typename _MoneyT> |
| basic_istream<_CharT, _Traits>& |
| operator>>(basic_istream<_CharT, _Traits>& __is, _Get_money<_MoneyT> __f) |
| { |
| typename basic_istream<_CharT, _Traits>::sentry __cerb(__is, false); |
| if (__cerb) |
| { |
| ios_base::iostate __err = ios_base::goodbit; |
| __try |
| { |
| typedef istreambuf_iterator<_CharT, _Traits> _Iter; |
| typedef money_get<_CharT, _Iter> _MoneyGet; |
| |
| const _MoneyGet& __mg = use_facet<_MoneyGet>(__is.getloc()); |
| __mg.get(_Iter(__is.rdbuf()), _Iter(), __f._M_intl, |
| __is, __err, __f._M_mon); |
| } |
| __catch(__cxxabiv1::__forced_unwind&) |
| { |
| __is._M_setstate(ios_base::badbit); |
| __throw_exception_again; |
| } |
| __catch(...) |
| { __is._M_setstate(ios_base::badbit); } |
| if (__err) |
| __is.setstate(__err); |
| } |
| return __is; |
| } |
| |
| |
| template<typename _MoneyT> |
| struct _Put_money { const _MoneyT& _M_mon; bool _M_intl; }; |
| |
| /** |
| * @brief Extended manipulator for inserting money. |
| * @param __mon Either long double or a specialization of @c basic_string. |
| * @param __intl A bool indicating whether international format |
| * is to be used. |
| * |
| * Sent to a stream object, this manipulator inserts @a __mon. |
| */ |
| template<typename _MoneyT> |
| inline _Put_money<_MoneyT> |
| put_money(const _MoneyT& __mon, bool __intl = false) |
| { return { __mon, __intl }; } |
| |
| template<typename _CharT, typename _Traits, typename _MoneyT> |
| basic_ostream<_CharT, _Traits>& |
| operator<<(basic_ostream<_CharT, _Traits>& __os, _Put_money<_MoneyT> __f) |
| { |
| typename basic_ostream<_CharT, _Traits>::sentry __cerb(__os); |
| if (__cerb) |
| { |
| ios_base::iostate __err = ios_base::goodbit; |
| __try |
| { |
| typedef ostreambuf_iterator<_CharT, _Traits> _Iter; |
| typedef money_put<_CharT, _Iter> _MoneyPut; |
| |
| const _MoneyPut& __mp = use_facet<_MoneyPut>(__os.getloc()); |
| if (__mp.put(_Iter(__os.rdbuf()), __f._M_intl, __os, |
| __os.fill(), __f._M_mon).failed()) |
| __err |= ios_base::badbit; |
| } |
| __catch(__cxxabiv1::__forced_unwind&) |
| { |
| __os._M_setstate(ios_base::badbit); |
| __throw_exception_again; |
| } |
| __catch(...) |
| { __os._M_setstate(ios_base::badbit); } |
| if (__err) |
| __os.setstate(__err); |
| } |
| return __os; |
| } |
| |
| #if __cplusplus > 201103L |
| |
| _GLIBCXX_END_NAMESPACE_VERSION |
| namespace __detail { |
| _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| |
| /** |
| * @brief Struct for delimited strings. |
| */ |
| template<typename _String, typename _CharT> |
| struct _Quoted_string |
| { |
| static_assert(is_reference<_String>::value |
| || is_pointer<_String>::value, |
| "String type must be pointer or reference"); |
| |
| _Quoted_string(_String __str, _CharT __del, _CharT __esc) |
| : _M_string(__str), _M_delim{__del}, _M_escape{__esc} |
| { } |
| |
| _Quoted_string& |
| operator=(_Quoted_string&) = delete; |
| |
| _String _M_string; |
| _CharT _M_delim; |
| _CharT _M_escape; |
| }; |
| |
| /** |
| * @brief Inserter for quoted strings. |
| * |
| * _GLIBCXX_RESOLVE_LIB_DEFECTS |
| * DR 2344 quoted()'s interaction with padding is unclear |
| */ |
| template<typename _CharT, typename _Traits> |
| auto& |
| operator<<(std::basic_ostream<_CharT, _Traits>& __os, |
| const _Quoted_string<const _CharT*, _CharT>& __str) |
| { |
| std::basic_ostringstream<_CharT, _Traits> __ostr; |
| __ostr << __str._M_delim; |
| for (const _CharT* __c = __str._M_string; *__c; ++__c) |
| { |
| if (*__c == __str._M_delim || *__c == __str._M_escape) |
| __ostr << __str._M_escape; |
| __ostr << *__c; |
| } |
| __ostr << __str._M_delim; |
| |
| return __os << __ostr.str(); |
| } |
| |
| /** |
| * @brief Inserter for quoted strings. |
| * |
| * _GLIBCXX_RESOLVE_LIB_DEFECTS |
| * DR 2344 quoted()'s interaction with padding is unclear |
| */ |
| template<typename _CharT, typename _Traits, typename _String> |
| auto& |
| operator<<(std::basic_ostream<_CharT, _Traits>& __os, |
| const _Quoted_string<_String, _CharT>& __str) |
| { |
| std::basic_ostringstream<_CharT, _Traits> __ostr; |
| __ostr << __str._M_delim; |
| for (auto& __c : __str._M_string) |
| { |
| if (__c == __str._M_delim || __c == __str._M_escape) |
| __ostr << __str._M_escape; |
| __ostr << __c; |
| } |
| __ostr << __str._M_delim; |
| |
| return __os << __ostr.str(); |
| } |
| |
| /** |
| * @brief Extractor for delimited strings. |
| * The left and right delimiters can be different. |
| */ |
| template<typename _CharT, typename _Traits, typename _Alloc> |
| auto& |
| operator>>(std::basic_istream<_CharT, _Traits>& __is, |
| const _Quoted_string<basic_string<_CharT, _Traits, _Alloc>&, |
| _CharT>& __str) |
| { |
| _CharT __c; |
| __is >> __c; |
| if (!__is.good()) |
| return __is; |
| if (__c != __str._M_delim) |
| { |
| __is.unget(); |
| __is >> __str._M_string; |
| return __is; |
| } |
| __str._M_string.clear(); |
| std::ios_base::fmtflags __flags |
| = __is.flags(__is.flags() & ~std::ios_base::skipws); |
| do |
| { |
| __is >> __c; |
| if (!__is.good()) |
| break; |
| if (__c == __str._M_escape) |
| { |
| __is >> __c; |
| if (!__is.good()) |
| break; |
| } |
| else if (__c == __str._M_delim) |
| break; |
| __str._M_string += __c; |
| } |
| while (true); |
| __is.setf(__flags); |
| |
| return __is; |
| } |
| _GLIBCXX_END_NAMESPACE_VERSION |
| } // namespace __detail |
| _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| |
| /** |
| * @brief Manipulator for quoted strings. |
| * @param __str String to quote. |
| * @param __delim Character to quote string with. |
| * @param __escape Escape character to escape itself or quote character. |
| */ |
| template<typename _CharT> |
| inline auto |
| quoted(const _CharT* __string, |
| _CharT __delim = _CharT('"'), _CharT __escape = _CharT('\\')) |
| { |
| return __detail::_Quoted_string<const _CharT*, _CharT>(__string, __delim, |
| __escape); |
| } |
| |
| template<typename _CharT, typename _Traits, typename _Alloc> |
| inline auto |
| quoted(const basic_string<_CharT, _Traits, _Alloc>& __string, |
| _CharT __delim = _CharT('"'), _CharT __escape = _CharT('\\')) |
| { |
| return __detail::_Quoted_string< |
| const basic_string<_CharT, _Traits, _Alloc>&, _CharT>( |
| __string, __delim, __escape); |
| } |
| |
| template<typename _CharT, typename _Traits, typename _Alloc> |
| inline auto |
| quoted(basic_string<_CharT, _Traits, _Alloc>& __string, |
| _CharT __delim = _CharT('"'), _CharT __escape = _CharT('\\')) |
| { |
| return __detail::_Quoted_string< |
| basic_string<_CharT, _Traits, _Alloc>&, _CharT>( |
| __string, __delim, __escape); |
| } |
| |
| #endif // __cplusplus > 201103L |
| |
| #endif // __cplusplus >= 201103L |
| |
| // Inhibit implicit instantiations for required instantiations, |
| // which are defined via explicit instantiations elsewhere. |
| // NB: This syntax is a GNU extension. |
| #if _GLIBCXX_EXTERN_TEMPLATE |
| extern template ostream& operator<<(ostream&, _Setfill<char>); |
| extern template ostream& operator<<(ostream&, _Setiosflags); |
| extern template ostream& operator<<(ostream&, _Resetiosflags); |
| extern template ostream& operator<<(ostream&, _Setbase); |
| extern template ostream& operator<<(ostream&, _Setprecision); |
| extern template ostream& operator<<(ostream&, _Setw); |
| extern template istream& operator>>(istream&, _Setfill<char>); |
| extern template istream& operator>>(istream&, _Setiosflags); |
| extern template istream& operator>>(istream&, _Resetiosflags); |
| extern template istream& operator>>(istream&, _Setbase); |
| extern template istream& operator>>(istream&, _Setprecision); |
| extern template istream& operator>>(istream&, _Setw); |
| |
| #ifdef _GLIBCXX_USE_WCHAR_T |
| extern template wostream& operator<<(wostream&, _Setfill<wchar_t>); |
| extern template wostream& operator<<(wostream&, _Setiosflags); |
| extern template wostream& operator<<(wostream&, _Resetiosflags); |
| extern template wostream& operator<<(wostream&, _Setbase); |
| extern template wostream& operator<<(wostream&, _Setprecision); |
| extern template wostream& operator<<(wostream&, _Setw); |
| extern template wistream& operator>>(wistream&, _Setfill<wchar_t>); |
| extern template wistream& operator>>(wistream&, _Setiosflags); |
| extern template wistream& operator>>(wistream&, _Resetiosflags); |
| extern template wistream& operator>>(wistream&, _Setbase); |
| extern template wistream& operator>>(wistream&, _Setprecision); |
| extern template wistream& operator>>(wistream&, _Setw); |
| #endif |
| #endif |
| |
| _GLIBCXX_END_NAMESPACE_VERSION |
| } // namespace |
| |
| #endif /* _GLIBCXX_IOMANIP */ |
